Cuckoo, Koel and Bustard - Otidimorphae
Photographs of articulated bird skeleton of a Channel-billed cuckoo, Asian Koel and Australian Bustard
Scythrops novahollandiae, Eudynamys scolopacea and Ardeotis australis or Choriotis australia skeletons.
A recent clade grouping based on genetic analysis of cuckoos and koels combined with bustards, called Otidimorphae. The relationship with other orders is unclear at present.
Courtesy of the University Museum of Zoology, Cambridge